Guardrail
- A railing that guards one from falling - typically 42" high with no opening thru which a 4" sphere might pass
Stair Rail
- A guard railing as above that also can serve as a handrail depending on height
Handrail
- A rigid material usually metal or wood that serves as a graspable surface to maintain one's balance when going up or down stairs usually 34"-38" off the stair nose line.
Newell Post
- A starting on ending vertical support
Pickets or Balusters
- Vertical pieces that form the interior of stair or guard rails
Lambs Tongue
- The graceful reverse bends and taper of the top rail at ends
Feet or Shoes
- Attachment points of railings at bottom